Duck egg air cells too big too soon?

[igorsMistress]

Hi all. I’m incubating Runner ducks, right now it’s day 19.5. I’ve had humidity at a range of 43 to 47% consistently since I set them. There’s a good difference in egg size but the bigger egg has a larger air cell than I would expect comparatively speaking. Here’s the smaller egg, about the size of a medium chicken egg

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Here’s the bigger egg

Should I leave well enough alone or increase humidity a bit?

 

[rjohns39]

Leave well enough alone... The one with the larger cell is going to hatch earlier than the other. Just be patient.

 

[igorsMistress]

Ok. Thanks for replying. I haven’t been a nervous nelly like this since the first time I hatched chickens lol.

 

[rjohns39]

@WVduckchick if you have time, stop by and give us your thoughts...

 

[WVduckchick]

How are they looking now? I would probably have said the same, let the humidity ride.
I would add though, I’d likely go by the majority of eggs. The pics look fine either way, but if more eggs lean toward one way or the other, I might make minor adjustments.
Good luck!

 

[igorsMistress]

How are they looking now? I would probably have said the same, let the humidity ride.
I would add though, I’d likely go by the majority of eggs. The pics look fine either way, but if more eggs lean toward one way or the other, I might make minor adjustments.
Good luck!

Thank you, I haven’t candled them again since then. These are shipped eggs and only two developed so there’s not a lot to go by. I could see a vein quite well in one egg but the other was already pretty much full of darkness and I couldn’t see anything.
I’m going to candle this evening and lockdown, just researching more on humidity first.